Four Galileo satellites are to be launched on an Ariane 5 launcher from the Kourou Space Centre in French Guyana at 18:36 UTC (19:36 CET) on December 12. For the first time, the European GNSS Agency (GSA) will be responsible for the Launch and Early Orbit Phase (LEOP) of this mission (L9), overseeing Spaceopal GmbH in their new role as Galileo Service Operator.